{"id":2584619,"url":"https://alion.io/job/ptg-energy-senior-network-engineer","title":"Senior Network Engineer","company":{"id":3813453,"name":"PTG Energy","domain":"ptgenergy.co.th","url":"https://alion.io/company/ptgenergy","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":null,"truth_index":null},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bangkok, Thailand"],"countries":["TH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":14000,"max_usd":34000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":600},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"BGP","optional":false},{"name":"DNS","optional":false},{"name":"Incident Management","optional":false},{"name":"OSPF","optional":false},{"name":"TCP/IP","optional":false},{"name":"VLAN","optional":false},{"name":"VPN","optional":false},{"name":"Zero Trust","optional":false}],"status":"live","first_seen_at":"2026-10-15T02:33:03Z","employer_posted_date":null,"last_verified_at":"2026-10-15T02:33:03Z","board_verified":false,"closed_at":null,"days_open":0,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":0},"description":"Description: Design, implement, monitor, and maintain enterprise network infrastructure, including LAN/WAN, SD-WAN, Data Center Network, Firewall, VPN (Site-to-Site/SSL), Aruba Wireless, DNS, and DNSSEC.\n\nManage and support cloud network connectivity and security across Azure and AWS environments, including VNet/VPC, VPN Gateway, Routing, NSG, and Cloud Firewalls.\n\nMonitor network availability, performance, capacity, and security to ensure system stability and business continuity.\n\nTroubleshoot and resolve network incidents, perform Root Cause Analysis (RCA), and implement corrective and preventive actions.\n\nManage network configuration, firmware upgrades, security patching, vulnerability remediation, and change management activities.\n\nPrepare and review Technical Requirements, Terms of Reference (TOR), and technical specifications for network infrastructure and security solutions.\n\nConduct technical evaluations, Proof of Concept (POC), solution testing, and TOR compliance verification before implementation.\n\nSupport network infrastructure projects, including solution design, planning, implementation, migration, and performance optimization.\n\nCoordinate and attend meetings with Business Units (BU), IT teams, vendors, and relevant stakeholders to gather requirements, investigate issues, identify solutions, and support project delivery.\n\nSupport Disaster Recovery (DR), network redundancy, high availability, and business continuity requirements.\n\nPrepare and maintain network diagrams, configurations, technical documentation, operational procedures, and performance reports.\n\nCollaborate with infrastructure, security, application, and development teams to ensure secure and reliable network connectivity.\n\nProvide technical consultation, knowledge sharing, and recommendations for network improvement and problem resolution.\n\nSupport planned maintenance, critical incidents, and other assigned IT infrastructure activities, including after-hours support when required.\n\nBachelor's degree or higher in Computer Science, Information Technology, Computer Engineering, or related fields.\n\n5-8 years of hands-on experience in enterprise network infrastructure, implementation, and operations.\n\nStrong knowledge of TCP/IP, Routing, Switching, VLAN, BGP/OSPF, Firewall, VPN, DNS, and network security.\n\nExperience with enterprise network solutions such as Cisco, Aruba, Palo Alto, Fortinet, or equivalent technologies.\n\nExperience in network troubleshooting, incident management, Root Cause Analysis (RCA), and production support.\n\nAbility to perform network design, technical evaluation, TOR preparation, POC, testing, and implementation.\n\nKnowledge of cloud networking, particularly Microsoft Azure; 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